Two critical inventions drove the industrialisation of newspaper printing:

1. Steam-Powered Press (1812) — Invented by Friedrich Gottlob Koenig and Andreas Friedrich Bauer. The Times of London adopted it in 1814, printing 1,100 sheets per hour (vs. a few hundred manually). This made newspapers available to a true mass audience for the first time, changing the nature of book and newspaper production fundamentally.
2. Linotype Machine (1884) — Invented by Otto Merganthaler. Before Linotype, typesetters manually placed individual metal letters into a tray, one at a time — extremely slow. Linotype cast entire lines of type at once using hot lead (hence “hot lead” typesetting). This created a “quantum leap in newspaper publishing” and remained in widespread use until the 1980s, when computerised pagination replaced it.

Together, these inventions enabled the high-volume, high-speed newspaper industry of the 19th and 20th centuries.